my viewpad screen display colour went weird

sorry guys, i don't know if i am in the right place and i am desperately need help. my viewsonic viewpad 7e display colour went all weird, it was still fin until i use one of the apps, and all of sudden, my screen colour go into very rough. IMAG0130 (1).jpgIMAG0131.jpgIMAG0133.jpg those are the pictures i took from my htc phone, as you can see my home screen colour went very harsh, and there lines constantly flashing if you know what i mean. if anyone can help me fix these.. it will be great, thank you